<!DOCTYPE html>
<html lang="en" xmlns:v-bind="http://www.w3.org/1999/xhtml" xmlns:v-on="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>htllo vue</title>
</head>
<body>
<div id="app">
  {{ message }}
</div>
<div id="app-2">
  <span v-bind:title="message">
    鼠标悬停几秒钟查看此处动态绑定的提示信息！
  </span>
</div>
<div id="app-3">
  <p v-if="seen">现在你看到我了</p>
  <p v-if="seen2">你看不到我</p>
</div>
<div id="app-4">
  <ol>
    <li v-for="todo in todos">
      {{ todo.text }}
    </li>
  </ol>
</div>
<div id="app-5">
  <p>{{ message }}</p>
  <button v-on:click="reverseMessage">逆转消息</button>
</div>
<div id="app-6">
  <p>{{ message }}</p>
  <input v-model="message">
</div>

<!-- 生产环境版本，优化了尺寸和速度 -->
<script src="https://cdn.jsdelivr.net/npm/vue"></script>
<script>
  var app = new Vue({
    el: '#app',
    data: {
      message: 'Hello Vue!'
    }
  });
  var app2 = new Vue({
    el: '#app-2',
    data: {
      message: '页面加载于 ' + new Date().toLocaleString()
    }
  });
  var app3 = new Vue({
    el: '#app-3',
    data: {
      seen: true,
      seen2: false
    }
  });
  var app4 = new Vue({
    el: '#app-4',
    data: {
      todos: [
        { text: '学习 JavaScript' },
        { text: '学习 Vue' },
        { text: '整个牛项目' }
      ]
    }
  });
  var app5 = new Vue({
    el: '#app-5',
    data: {
      message: 'Hello Vue.js!'
    },
    methods: {
      reverseMessage: function () {
        this.message = this.message.split('').reverse().join('')
      }
    }
  });
  var app6 = new Vue({
    el: '#app-6',
    data: {
      message: 'Hello Vue!'
    }
  });
</script>
</body>
</html>
